Table 1. Position of the pollen-tube tip in developing pistils of A. sieboldiana.

	Developmental stages of ovules
Position of pollen-tube tip	Primordial	Megaspore mother cell	Megaspore tetrad	One-nucleate embryo sac	Two-nucleate embryo sac	Four-nucleate embryo sac	Eight-nucleate embryo sac	Mature embryo sac
Style	34	10	4
Upper space of the ovarian locule			3	7	5
Chalaza					11	10	2	4
Embryo sac								24*

Numbers indicate the number of postils observed.

^*Including embryo sacs just after fertilization.